Gce Model Questions Vol1 2018 Physics Question 46

Practice objective / multiple choice question 46 from the 2018 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2018 Physics Objective / Multiple Choice Medium Difficulty
Question 46 GCE_MODEL_QUESTIONS_VOL1 • 2018 • PHYSICS • objective

A 5.0 kg block is released from rest at the top of a frictionless incline that is 30\(^\circ\) to the horizontal and 3.0 m high. It slides down and then a motor pulls the block up the same incline at constant speed, covering the same distance in 4.0 s. (a) Calculate the work done by gravity on the block during its descent. (b) Determine the average power output of the motor while pulling the block up.

Answer Options

A. (a) 1.8\times10^2 J, (b) 4.5\times10^1 W (≈45 W)
B. (a) 2.0\times10^2 J, (b) 5.0\times10^1 W (≈50 W)
Correct Answer C. (a) 1.5\times10^2 J, (b) 3.7\times10^1 W (≈37 W)
D. (a) 1.2\times10^2 J, (b) 2.5\times10^1 W (≈25 W)
Correct Answer
C
Correct Option:
(a) 1.5\times10^2 J, (b) 3.7\times10^1 W (≈37 W)

About This Question

This is Gce Model Questions Vol1 2018 Physics Question 46. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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