Problem 3A solid uniform sphere of mass 120 kg and radius 1.7 m starts from rest and rolls without slipping down an inclined pla

Answer:
120 Watts

Explanation:

Given that force is applied at an angle of 30 degree below the horizontal

So let say force applied if F

now its two components are given as

Now the normal force on the block is given as

now the friction force on the cart is given as

now if cart moves with constant speed then net force on cart must be zero

so now we have

so the force must be 199.2 N

Answer:

Winds tend to rotate in a counter clockwise direction in the center of northern and southern hemisphere.

Explanation:

The wind blows clockwise around a high pressure area  in the northern hemisphere and the wind blows counter - clockwise around low pressure.  

In the northern hemisphere High-pressure systems rotate clockwise direction and in the southern hemisphere  low-pressure systems rotate clockwise direction.

 

Answer:

Explanation:

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Let the total distance from the ground be “h” , so the distance travelled in last one second will be “ h/2”. So as it is free fall , u(initial velocity) = 0.