Question

How friction is going to affect the final velocity of bullet/pendulum system in an experiment of perfectly inelastic collision?

Answer #1

Friction force always acts in the opposite direction to that of the motion. Due to this, a deacceleration originates causing the velocity of the objects to decrease. So, the velocity of the bullet when it collides with the pendulum is somewhat less than the actual velocity.

Similarly, after collision, the velocity of the bullet-pendulum system too decreases than the theoretical value. Finally , as the initial velocity is smaller than the theoretical value, the pendulum will rise to a lower height than predicted by our calculations.

In a "ballistic pendulum" a bullet hits a pendulum which is
initially at rest. After the collision the pendulum with the bullet
embedded in it rises until it comes to rest. Which one of these is
correct? (Neglect air resistance and friction in the suspension of
the pendulum.)
The mechanical energy is conserved during the collision.
The mechanical energy is conserved during the swing.
The momentum is conserved during the swing.
Both the momentum and the mechanical energy are conserved...

A 75 g bullet is shot at a initial horizontal velocity
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explain how friction affects the period and amplitude in a
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A 10 g bullet is fired with 450 m/s into a 10 kg block that sits
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The block, with the embedded bullet, then slides to the edge of the
table and drops down with some initial velocity while leaving the
edge of the table. The coefficient of kinetic friction between the
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A bullet with mass m(lowercase m) is fired into a block of wood
with mass M(uppercase M), suspended like a pendulum, and makes a
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bullet, the block swings up to a maximum height h. Given the values
of h = 5.00 cm = 0.0500 m, m = 6.75 g = 0.00675 kg, and M = 2.50
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(b)...

A bullet (m = 0.04kg) with a velocity of 285m/s hits a block (M
= 2.3kg) that is initially at rest. The bullet passes
through the block and emerges with a velocity of
85m/s.
(a) What is the velocity of the block after the bullet leaves
it?
(b) What is the total kinetic energy of this system before the
collision?
(c) What is the total kinetic energy of this system after the
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A 5.14-g bullet is moving horizontally with a velocity of +342
m/s, where the sign + indicates that it is moving to the right (see
part a of the drawing). The bullet is approaching two blocks
resting on a horizontal frictionless surface. Air resistance is
negligible. The bullet passes completely through the first block
(an inelastic collision) and embeds itself in the second one, as
indicated in part b. Note that both blocks are moving after the
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A rifle bullet with mass 15.0 g strikes and embeds itself in a
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