A copper block rests a distance r from the center of a steel turntable. The coefficient of static friction between block and surface is μ
a. Please derive an equation for the angular speed w at which the block would slip
and slide off the turntable
= √/r

b. If the copper block is 0.3 m from the center and the coefficient of static friction is
0.53, at what angular speed will it slip and slide off the turntable? (4.16 rad/s)

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.

How will the system respond to a temperature increase?