Physics, 04.12.2021 14:00 ella3714

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A man of mass 50 kg is pulling on a plank of mass 100kg kept on a smooth floor as shown with force of 100 N. If both man and plank move together find the force of friction acting on the man.

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Need Help with this question ~ A man of mass 50 kg is pulling on a plank of mass 100kg kept on a

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Answer from: 21hendlill

The man is standing on the plank. Then he is pulling the rope towards himself. He pushes the plank forward with the legs so that he can pull the rope backwards.

The man is standing on the plank. Then he is pulling the rope towards himself. He pushes the plank forward with the legs so that he can pull the rope backwards. So the friction f acts in the forward direction for the plank. Also f acts in the opposite direction on the man. The tension T in the rope is 100 N (given). Let the friction force = f Newtons.

Man: net force = T - f = m a = 50 a

net force = T - f = m a = 50 a

Plank: net force = T + f = m a = 100 a

net force = T - f = m a = 50 a

Plank: net force = T + f = m a = 100 a

As T = 100 N, a = 4/3 m/s^2 and f = 100/3 Newtons.

[correct me if I'm wrong]:)

Need Help with this question ~ A man of mass 50 kg is pulling on a plank of mass 100kg kept on a s

Answer from: GingerSnaps

The man is standing on the plank then he is pulling the rope towards himself. He pushes forward with the legs so that pushes the plank "rope backwards

So that friction f acts in forward direction the plank.

The tension T in the rope is 100 N

$(A) \frac{100}{3} N \: towards \: left$

the fiction force f newtons.

$Man's \: F _{net} ⇒T−F=ma$

$F _{net} (man)⇒T−F=50a$

Plank Fnet ⇒T+f=ma

$F _{net} ( plank)⇒T+f=lov \: a$

As T=100 N

$a = \frac{4}{3} {m/s}^{2}$

$f = \frac{100}{3} \: newton$

Answer from: Quest

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

Answer from: Quest

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

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