Classical Mechanics Answers

If we apply 10 N force on a spring of spring constant 10 N/m and extend it by 0.1 m then how it will apply 10N force as a reaction force or restoring force against our action force to follow newtons 3rd law
And how will we know that applying a particular force will produce how much displacement
Would that be done by F=ma because F=kx is for knowing the restoring force

When we jump on a trampolin we put action force due to which it bends but gains its original shape by restoring force
But we also know that no body is perfectly elastic then the reaction force to bring trampolin in its original shape would also be less then how it follows newton's 3rd law

When we lift a heavy table we apply a force on it that is the action force so does that applies a reaction force on our hands
If so then why the table is moving up by our force isn't the action force equal to reaction force

jeff throws tennis ball at initial velocity of 2 meters per second. jeffs hand is 2 meters above the ground at poit of release. how long between leaving his hand and hitting the floor

the length of the ropes on a playground swing is 2.0 m. a) what is the maximum speed attainable on the swing if the maximum value of theta is 60 degrees?. b) if a 50 kg person is playing the swing, what is the maximum kinetic energy he/she can reach?

A particle of weight Wrests on a smooth plane which is inclined at 40degrees to the horizontal. the particle is prevented from slipping by a force of 50N acting parallelto the plane &up a line of greatest slope.Calculate;
(a)W
(b)the reaction due to the plane

A particle whose weight is 50N is suspended by a light string which is at 35degrees to the verticalunder the action of a horizontal force F. FIND
(i)the tension in the string
(ii)F

2 forces, p & q, act NW & NE respectively. They are in equilibrium with a force of 50N acting due S & a force 20N acting due E. Find p & q

A ball weighing 25 grams is thrown vertically into the air. It takes 15 seconds to reach its highest point. How much time would it take to reach the ground from the highest point?

Find the length of the major axis of earth orbit Keplers third law and fact that earths orbital period is 365.256 days. Use
G=6.6726×10^-11 Nm^2kg^-2. M=1.99×10^30 kg. π=3.14.recall that 1N=1kgm^-2. The length of the major axis of earth orbit is_______________km.