1.) A cookie jar is moving up a 39.7o incline. At a point 0.56 m from the bottom of the incline (measured along the incline), it has a speed of 1.48 m/s. The coefficient of kinetic friction between the jar and incline is 0.15.(adsbygoogle = window.adsbygoogle || []).push({});

(a) How much farther up the incline will the jar move?

(b) How fast will it be going when it slides back to the bottom of the incline?

2.) A pendulum (87cm long) with a 0.75kg bob is released from rest at an initial angle of theta with the vertical. At the bottom of the swing, the speed of the bob is 2.9m/s. Find the initial angle theta:

A pendulum (87cm long) with a 0.75kg bob is released from rest at an initial angle of theta with the vertical. At the bottom of the swing, the speed of the bob is 2.9m/s. What angle does the pendulum make with the vertical when the speed of the bob is 1.1 m/s?

Any help would be greatly appreciated.

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# Homework Help: A couple of problems I need help on

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