A 1.2 m -long, 750 g rope pulls a 9.0 kg block of ice across a horizontal, frict

Question

A 1.2 m -long, 750 g rope pulls a 9.0 kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.0 m/s2 .

Problem 5.37 Part A A 1.2 m -long, 750 g rope pulls a 9.0 kg block of ice across a horizontal,frictionless surface. The block accelerates at 1.0 m/s How much force pulls forward on the block of ice? Express your answer using two significant figures. FR on ! Submit My Answers Give Up Part B How much force pulls forward on the rope? Express your answer using two significant figures. ext Submit My Answers Give Up

Explanation / Answer

(a) Force on the block equal = mblock*a where a is acceleration
Fblock = 9*1 = 9N
(b) Force applied by the external to pull complete system,
When block is moving with the acceleration of 1 m/s2 then rope is also moving with same therefore
Fexter = (mblock+ mrope)*a = (9+0.750)*1 = 9.75 N

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