During a football workout, two linemen are pushing the coach on the sled. The combined mass of the sled and the coach is 349.0 kg. The coefficient of friction between the sled and the grass is 0.860. The sled accelerates at a rate of 0.670 m/s/s. Determine the force applied to the sled by the linemen in newtons. Round to a whole number. (Use g=9.81 m/s2.

How would doubling the made of an object change the objects potential energy

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.