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Monica [59]
3 years ago
14

How much work is done by the force of gravity when the book is released?

Physics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

please see picture

Explanation:

and mark me brainliest

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4. A box of books weighing 325 N moves at a constant velocity across the floor when the box is pushed with a force of 425 N exer
Rudik [331]

Answer:

0.61°

Explanation:

Since the box move at constant velocity, it means there is no acceleration then we can say it has a balanced force system.

Pulling force= resistance force

From the formula for pulling force,

F(x)= Fcos(θ)

= 425×cos(35.2)

=347N

The force exerted downward at an angle of 35.2° below the horizontal= Fsin(θ)= 425sin(35.2)

=425×0.567=245N

Resistance force= (325N+ 245N) (α)= 570N(α)

We can now equates the pulling force to resistance force

570 (α)= 347N

(α)= 347/570

= 0.61

3 0
3 years ago
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hram777 [196]

Answer:

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Explanation:

8 0
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Hope this helps! :)
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