Physics question about work A block of mass m = 3.30 kg is pushed a distance d =

Question

Physics question about work

A block of mass m = 3.30 kg is pushed a distance d = 3.40 m along a frictionless, horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle theta = 29.0 degree below the horizontal as shown in the figure below. Determine the work done on the block by the applied force. Determine the work done on the block by the normal force exerted by the table. Determine the work done on the block by the gravitational force. Determine the work done by the net force on the block.

Explanation / Answer

a) Work done = F.d

= |F||d| cos@

W1 = 16 x 3.40 x cos29 = 47.58 J

b) angle between N and displacement d = 90 deg

cos90 = 0

W2 = 0

c) angle between mg and d = 90deg

cos90 = 0

W3 = 0

d) Wnet = W1 + W2 + W3 = 47.58 J

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.