A block with mass m = 13.0 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4954.0 N/m after being compressed a distance x1 = 0.408 m from the spring’s unstretched length. The floor is frictionless except for a rough patch a distance d = 2.1 m long. For this rough path, the coefficient of friction is μk = 0.46.

How much work is done by friction as the block crosses the rough spot?

Ive tried (0.46*13*9.8*2.1)=123.068 but apparently that's wrong

Question

A block with mass m = 13.0 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4954.0 N/m after being compressed a distance x1 = 0.408 m from the spring’s unstretched length. The floor is frictionless except for a rough patch a distance d = 2.1 m long. For this rough path, the coefficient of friction is μk = 0.46.

How much work is done by friction as the block crosses the rough spot?

Ive tried (0.46*13*9.8*2.1)=123.068 but apparently that's wrong