Options:
(a) Total kinetic energy of the system remains constant.
(b) Total momentum of the system is conserved.
(c) Both A and B are true.
(d) Neither A nor B are true.
Answer:
(b) Total momentum of the system is conserved.
Explanation:
An inelastic collision is a type of collision in which momentum is conserved and kinetic energy is not conserved. That is, there is loss of kinetic energy.
In an inelastic collision:
Total momentum before collision = Total momentum after collision
An example of inelastic collision is seen in the ballistic pendulum, The ballistic pendulum is a device in which a projectile such as a bullet is fired into a suspended heavy wooden stationary block.
-9 and +2
Hope I helped :)
It’s called conservation of energy. The system (the rider) can’t randomly gain energy without something else giving it energy because energy can’t be created or destroyed, only transferred. The pendulum example is beyond popular and you see physics professors doing it all the time. I think your teacher wants you to say it’ll continue forever, but I don’t think it will. The system will most likely lose energy to its surroundings. And there’s things like air resistance which will, overtime, slow it down. So no, it won’t go on forever
the force of effort is given as
E = effort force = 280 N
m = mass of box to be lifted = 320 kg
g = acceleration due to gravity = 9.8 m/s²
force of load due to weight of box is given as
L = force of load = mg
L = 320 x 9.8
L = 3136 N
mechanical advantage for pulley system is the simply the ratio of the effort put in to the load being lifted.
mechanical advantage is given as
MA = load/effort
MA = L/E
MA = 3136/280
MA = 11.2
