Question

Need quite a bit of help

Answer 1

When the cart was at Table

• Normal reaction (N)=mg

Now acceleration due to gravity acting on the gravity.

• When the air comes out of straw it tries to take the cart upwards.
• But the force is equal to that of acceleration due to gravity but in opposite direction.

Hence.

`\\ \sf\Rrightarrow F_(net)=0N`

• So the cart doesn't move