A massless spring balance is attached to 2 kg trolley and is used to pull the trolley along a flat smooth surface as shown in the figure. The reading on the spring balance is 10kg during the motion. The acceleration of the trolley is (Use g=9.8 `ms^(-2)`)

Options

A. `4.9ms^(-2)`
B. `9.8ms^(-2)`
C. `49ms^(-2)`
D. `98ms^(-2)`

Answer

c