Question

A seesaw was made by pivoting a 3 m wooden plank at its center. A 30...

A seesaw was made by pivoting a 3 m wooden plank at its center. A 30 kg child sits on the left end of the seesaw and a 40 kg child sits 50 cm from the right end of the seesaw.

a) Which child will be closer to the ground (30 or 40 kg)?

b) In which direction must the 40 kg child move (to the left or to the right) to balance the seesaw?

c) How far must the 40 kg child move to balance the seesaw?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Q 1. Suppose two children are using a uniform seesaw that is 3.00 m long and...
Q 1. Suppose two children are using a uniform seesaw that is 3.00 m long and pivoted at 2 m from the left edge, and a 30.0 kg child sits 1.40 m from the center of mass of the seesaw. a. Calculate where the second 18.0 kg child must sit to balance the seesaw ?. b. How far will the child be from the center of mass of the seesaw ? c. How far will the child be from the...
A uniform, 254-N rod that is 1.89 m long carries a 225-N weight at its right...
A uniform, 254-N rod that is 1.89 m long carries a 225-N weight at its right end and an unknown weight W toward the left end (see the figure (Figure 1)). When W is placed 42.0 cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 69.2 cm from the right end. A) Find W. B) If W is now moved 29.3 cm to the right, how far must the fulcrum be...
A wooden beam with mass of 30 kg is placed over two supports. The beam is...
A wooden beam with mass of 30 kg is placed over two supports. The beam is just resting on top of the supports - it is not connected to the supports. The beam is 5 meters long and 2 meters is cantilevered out over the right-hand support. How far from the right end of the beam could a 50 kg person stand before the beam tips? (Hint: Think about what happens to the left reaction force when the beam just...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5 m on a merry-go-round (rmgr = 2.0 m, Imgr = 1000 kg*m2) with a constant force F = 90 N applied tangentially to the edge of the merry-go-round (i.e., the force is perpendicular to the radius). The merry-go-round resists spinning with a frictional force of f = 10 N acting at a radius of 1 m and a frictional torque τ = 15 N*m...
A uniform, 245-N rod that is 2.10 m long carries a 225-N weight at its right...
A uniform, 245-N rod that is 2.10 m long carries a 225-N weight at its right end and an unknown weight W toward the left end (see the figure (Figure 1)). When W is placed 46.0 cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 69.2 cm from the right end. W= 71.7 N If W is now moved 28.1 cm to the right, how far must the fulcrum be moved...
Two blocks, one made of wood and one of copper, have equal volumes. The wooden block...
Two blocks, one made of wood and one of copper, have equal volumes. The wooden block is floating on water, and the copper block is completely submerged. Which block has a greater buoyant force acting on it? It is known that copper has higher density than wood. Question 6 options: The wooden block The buoyant force acting on both is zero The copper block Both have equal buoyant force acting on them Question 7 (2 points) Saved A CD makes...
A block of mass m = 0.53 kg attached to a spring with force constant 119...
A block of mass m = 0.53 kg attached to a spring with force constant 119 N/m is free to move on a frictionless, horizontal surface as in the figure below. The block is released from rest after the spring is stretched a distance A = 0.13 m. (Indicate the direction with the sign of your answer. Assume that the positive direction is to the right.) The left end of a horizontal spring is attached to a vertical wall, and...
2. A 100 cm rod is free to pivot about one end, and a 50 N...
2. A 100 cm rod is free to pivot about one end, and a 50 N force is applied at the other end at an angle 20 degree to the horizontal. (i) Calculate the lever arm of the rod. (ii) Calculate the torque about the pivot point. 3. Joe weighing 500 N sits 0.5 m to the left of center of the seesaw 2 m long. Liz sits at the end on the opposite side of a seesaw of mass...
1. An ideal pendulum has all of its mass m concentrated at the end of a...
1. An ideal pendulum has all of its mass m concentrated at the end of a massless string of length L, as shown in the figure. The mass is pulled to a slight angle to the left and released from rest, and it takes exactly 1/8 th of a second to arrive at its maximum position at an equal angle on the right side of equilibrium. What is the frequency f of this motion? 2. An otherwise Earth-like planet is...
1. An oven chimney is made of brick with a heat transmission coefficient 1.1 W/mK 10...
1. An oven chimney is made of brick with a heat transmission coefficient 1.1 W/mK 10 cm thick. Since the shaft exterior radiation beam coefficient is 0.8 and the flue gas temperature is 350°C, the external ambient temperature is 25°C and the outer ambient heat transport coefficient is 20 W/m2K; a) Calculate the shaft exterior temperature. b) In order to reduce the risk of burn injury that may occur in the body, the shaft is asked to be below 55°Cve...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT