| A pendulum of mass m and length Lis initially at rest at an angle 8. The pendulum then swings down and collides elastically with a stationary block of mass M. The block slides along the surface and eventually stops when it encounters a rough patch of length |Ad. M Assume that m = 1.7kg, L = 0.80m, 8 = 67°, M = 2.8kg and Ad| = 0.55m. a) Calculate the speed of the block immediately after the elastic collision. b) What is the coefficient of kinetic friction of the rough patch?
| A pendulum of mass m and length Lis initially at rest at an angle 8. The pendulum then swings down and collides elastically with a stationary block of mass M. The block slides along the surface and eventually stops when it encounters a rough patch of length |Ad. M Assume that m = 1.7kg, L = 0.80m, 8 = 67°, M = 2.8kg and Ad| = 0.55m. a) Calculate the speed of the block immediately after the elastic collision. b) What is the coefficient of kinetic friction of the rough patch?
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Transcribed Image Text:| A pendulum of mass m and length is initially at rest at an angle 9. The pendulum
then swings down and collides elastically with a stationary block of mass M. The
block slides along the surface and eventually stops when it encounters a rough
patch of length |Ad.
Assume that m = 1.7kg, L = 0.80m, 8 = 67, M = 2.8kg and Ad = 0.55m.
a) Calculate the speed of the block immediately after the elastic collision.
b) What is the coefficient of kinetic friction of the rough patch?
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