A wheel of radius
R and mass
M is placed at the bottom of a fixed step of height
R as shown in the figure. A constant force is continuously applied on the surface of the wheel so that it just climbs the step without slipping. Consider the torque
τ about an axis normal to the plane of the paper passing through the point
Q. Which of the following options is/are correct?
![640606_a9a2c04c139b4bad8596f7347ac04c4c.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/640606_a9a2c04c139b4bad8596f7347ac04c4c.png)