- #1
bksree
- 77
- 2
Hi
A person standing on a cart throws a ball at an angle to the horizontal
Is momentum conserved
(i) in x direction if the cart is on a frictionless surface ?
(ii) in x direction if cart is on real ground (i.e. with friction)
(iii) in y direction
My answer is : with a system consisting of man, cart and ball
(i) yes (ii) no because ground exerts frictional force on cart
(iii) yes because weight of man + cart + any reaction exerted by him is balance by ground and hence external force in y direction is zero again
TIA
A person standing on a cart throws a ball at an angle to the horizontal
Is momentum conserved
(i) in x direction if the cart is on a frictionless surface ?
(ii) in x direction if cart is on real ground (i.e. with friction)
(iii) in y direction
My answer is : with a system consisting of man, cart and ball
(i) yes (ii) no because ground exerts frictional force on cart
(iii) yes because weight of man + cart + any reaction exerted by him is balance by ground and hence external force in y direction is zero again
TIA