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antiseptic1488 [7]

2 years ago

12

The power of motor is 50 w the motor drags a 2 object horizontally at a constant speed of 10m/s along a rough floor . What is th

e frictional force between the object and the floor

1 answer:

Ilia_Sergeevich [38]2 years ago

5 0

Frictional force between the object and the floor=5 N

Explanation:

power= 50 W

velocity= 10 m/s

power= force * velocity

50=F * 10

F=50/10

F=5 N

Thus the force of friction= 5 N

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$E = P + W_f$

Here E the the energy of the spring which is increasing and this is mathematically represented as

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Here k is the spring constant

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$P = mgd$

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So

$\frac{1}{2} * k * d^2 = mgd + f * d$

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