3. Determine the work done by gravity on a 5 kg bowling ball if the bowling ball.. a) Falls straight down 8 m off the left edge of the ramp 30 b) Rolls 16 m down the ramp c) Rolls 10 m up the ramp

29 Question 5 0 In which of the following situations would the capacity to do work be greatest? A Note: Omega is angular velocity, ^ is the symbol for power, eg ^2 means the variable is squared $ 10 O1-10 kgm^2 omega = 2.5 rad/s 1 m 14 3:11 www..c O1-15 kgm^2 omega = 1 rad/s Om- 15 kg v = 2 m/s 16 20 kg h = 0.10 m 49 6 E & 4- 7 18 * 4+ 8 hp fo 9 ho 20 pts ? 74°F

C7 8.) When a force acts on an object from an angle other than either 0° or 180° to the direction of motion: a.) The force is perpendicular to the direction of motion, so no work gets done. b.) The force is not in the direction of motion, so no work gets done.     c.) The perpendicular vector component of the force does work but the parallel one does not. d.) The parallel vector component of the force does work but the perpendicular one does not. e.) The parallel and perpendicular component of the force both do work.

13 a) Calculate the work done when a 5.0 kg bag of apples is lifted 1.2 m off the ground.  13 c) Calculate the power developed when the action of lifting the apples takes 2.0 s.