To give a 17-kg child a ride, two teenagers pull on a 3.3-kg sled with ropes, as

Question

To give a 17-kg child a ride, two teenagers pull on a 3.3-kg sled with ropes, as indicated in the figure (Figure 1). Both teenagers pull with a force of 55 N at an angle of 35 ° relative to the forward direction, which is the direction of motion. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. You may want to review (Pages 134-136) Part A Find the acceleration of the sled and child Express your answer using two significant figures m/s Submit Figure 1 of 1> X Incorrect; Try Again; 5 attempts remaining Provide Feedback 55 N 35° 350 57 N

Explanation / Answer

in forward direction ,

Applying Fnet = m a

2 ( 55 cos35) - 57 = (17 + 3.3) a

a = 33.1/20.3

a = 1.6 m/s^2 ....Ans

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