Question

When a carpenter shuts off his circular saw, the 10.0-inch-diameter blade slows from 4957 rpm to zero in 3.25 s .

A) What is the angular acceleration of the blade? Express your answer to three significant figures. (units=rad/s^2)

B) What is the distance (ft) traveled by a point on the rim of the blade during the deceleration? Express your answer to three significant figures.

C) What is the magnitude of the net displacement of a point on the rim of the blade during the deceleration? Express your answer to three significant figures.

d= _____ in

Answer 1

B. In three significant figure is d= 6.42 × 10³ m = 2.14 × 10^4 ft

C. Displacement = 3.66 in