Answer:
<h2>15N</h2>Explanation:
The choices for this question are
Givens
However, to solve this we just need to use Newton's third law which states: <em>"When an object exerts a force on another object, the second object will exert an equal and opposite force to the first object".</em>
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If the bowling ball strikes a pin with a force of 15N, then the pin will exert the same 15N on the bowling ball, but with the opposite direction. If the bowling force is positive, then the pin force will be negative.
Therefore, the right answer is the second choice 15N.
Answer:
the minimum value of torque is 101.7 N-m.
Explanation:
Given that,
Mass of bundle of shingles, m = 30 kg
Upward acceleration of the shingles,
The radius of the motor of the pulley, r = 0.3 m
Let T is the tension acting on the shingles when it is lifted up. It can be calculated as :
T-mg=ma
T=m(g+a)
Let is the minimum torque that the motor must be able to provide. It is given by :
the minimum value of torque is
Answer:
Explanation:
Centripetal acceleration (a) is defined as the square of an object's velocity (V^2) divided by the distance of the object from it's point/axis of revolution (r). So:
which allows us to solve for the velocity: