Achild wants to pump up a bicycle tire so that its pressure is 1.2 × 105 pa above that of atmospheric pressure. if the child uses a pump with a circular piston 0.035 m in diameter, what force must the child exert?

The force exerted by the child is 460.8 N

Explanation:

We have given that pressure

Radius of the circular piston r = 0.035 m

So area

We have to find the force exerted by the child

We know that force is given by

So force will be

So the force exerted by the child is 460.8 N

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

the answer is b

explanation: