edited by
0 votes
0 votes

The figure below shows an electrically conductive bar of square cross-section resting on a plane surface. The bar of mass of $\text{1 kg}$ has a depth of $\text{0.5 m}$ along the $\text{y}$ direction. The coefficient of friction between the bar and the surface is $0.1$. Assume the acceleration due to gravity to be $\text{10 m/}$$s^{2}$. The system faces a uniform flux density $B=-1 \hat{z} T$. At time $t=0$, a current of $\text{10 A}$ is switched onto the bar and is maintained.

When the bar has moved by $\text{1 m}$, its speed in metre per second is ___________ (rounded off to one decimal place).

edited by

Please log in or register to answer this question.

Answer: