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3 years ago

PLEASE HELP ASAP!!

Physics

1 answer:

kirza4 [7]3 years ago

7 0

Answer:

A. Distance over which the force is applied

Explanation:

As we know that in pulley system the mass of the car is balanced by the tension in the string

so here we will have

$T = r \times F$

so here in order to decrease the force needed to lift the car we have to increase Distance over which the force is applied

So here if we increase the distance over which force is applied then it will reduce the effort applied by us in this pulley system as the torque will be more if the distance is more.

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QUESTION 3 ( MARKS]

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Answer:

392 N

Explanation:

Draw a free body diagram of the rod. There are four forces acting on the rod:

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∑τ = Iα

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T = 392 N

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