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3) An athlete was practising javelin throw. Which force is applied to set the javelin in motion?
a) electrostatic force b)Mechanical force
c) Muscular force
4) Which of the following device is used to measure the force acting on an obiect?
d) Magnetic force

Verified Answer :

GinnyAnswer

Final answer:

The muscular force is applied to set the javelin in motion during a throw. A force sensor or dynamometer is used to measure force on an object. Frictional force is not a field force.


Explanation:

Muscular force is applied to set the javelin in motion during a javelin throw. It is the force exerted by the athlete's muscles to propel the javelin forward.

The device used to measure the force acting on an object is a force sensor or a dynamometer.

Frictional force is the force that is NOT a field force, unlike gravitational, electrostatic, and magnetic forces which are field forces.


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