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Radda [10]
3 years ago
12

Rather than push a heavy box from one room to another, a worker chooses to place the box on a wheeled cart. In terms of friction

, explain why moving the box on the wheeled cart is easier than pushing.
Physics
1 answer:
babunello [35]3 years ago
4 0

Answer:

its on wheels and they are supposed to make it easy

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4 0
3 years ago
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reach
Nookie1986 [14]

Answer:489 Revolutions

Explanation:

Given

Angular deceleration(\alpha ) =1.5rad/s^2

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time taken by machine to reach zero angular velocity

0=\omega _0+(\alpha)t

0=96+(-1.5)t

t=64 sec

angular displacement is given by

\theta =\omega_0t+\frac{1}{2}\alpha t^2

\theta =96(64)-\frac{1}{2}(-1.5)(64^2)=3072 degree

For revolutions =\frac{3072}{2\cdot \pi}=488.86 \approx 489 revolution during Slowdown

5 0
3 years ago
The rollercoaster is near the
Sveta_85 [38]

Answer:

A. It has mostly kinetic energy

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Kinetic energy refers to movement. Potential energy refers to height. In this case, the big drop just got over. So, when the coaster is at the bottom, it has more kinetic than potential energy . Potential energy is still present but kinetic is more at the bottom.

5 0
3 years ago
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