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-BARSIC- [3]
3 years ago
14

In Case 1, a force F is pushing perpendicular on an object a distance L/2 from the rotation axis. In Case 2 the same force is pu

shing at an angle of 30 degrees a distance L from the axis. 1)In which case is the torque due to the force about the rotation axis biggest?
Physics
1 answer:
pashok25 [27]3 years ago
7 0

Answer:

The answer is c) same.

Explanation:

When a force is applied at some point on a rigid body, the body makes a rotational movement about the axis. Said property of the force applied to rotate the body is calculated with a magnitude known as torque, which is defined as the moment of force at a capacity of that force to make a rotation around a specific point.

for case 1, the magnitude of the torque is equal to:

τ = F*(L/2)

For case 2, the torque magnitude equals:

τ = F*sin(30°) = F*(L/2)

It can be seen that in both cases it is the same torque.

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3 years ago
A softball player moving 3.89 m/s
guapka [62]

Answer:

0.119 s is the correct answer to this question.

Explanation:

As mentioned in the question

U=3.89\ m/s

a=-1.44\ m/s^2

S=4.8\ m

Consider the final speed of the softball covering the distance of 4.8m is v

Now using the equation

v^2=U^2+2aS

Putting the value of U, A, S in the previous equation we get

V^2=3.89^2-2\times 1.44\times 4.8\\V=3.7\ m/s\\

Now again using the equation

v=U+at

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Substituting the value of v, U, a

3.7=3.89-1.44\times t\\t=0.119\ s\\

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2 years ago
A toy car (0.50 kg) runs on a frictionless track and has an initial kinetic energy of 2.2 J, as the drawing shows. The numbers b
steposvetlana [31]

Answer:

Height will be equal to 0.4489 m

Explanation:

We have given mass of the toy m = 0.50 kg

Initial kinetic energy K = 2.2 J

We have to fond the height of the hill over which car roast

When car will roast the hill its kinetic energy will be converted into potential energy and at maximum height all kinetic energy will be converted into potential energy

So at maximum height mgh=K

Acceleration due to gravity g=9.8m/sec^2

So 0.50×9.8×h = 2.2

h = 0.4489 m

6 0
2 years ago
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