Engineering Board Exam Reviewer · Engineering Mechanics · hard
A 20 kg block slides down a 50° incline with a coefficient of kinetic friction of 0.1. What is the block's acceleration down the incline? (g = 9.81 m/s2)
- 7.51
- 8.15
- 0.98
- 6.88
Answer
D. 6.88
Solution
a = g( - ) = 9.81( 50° - 0.1 50°) = 6.88 m/s2.
More Engineering Mechanics questions
- A net force acts on a 22 kg object, giving it an acceleration of 5 m/s2. What is the magnitude of the net force?
- Two masses, 13 kg and 9 kg, are connected by a light inextensible string over a frictionless, massless pulley (an Atwood machine). What is…
- A 18 kg block slides down a 45° incline with a coefficient of kinetic friction of 0.3. What is the block's acceleration down the incline?…
- A net force acts on a 20 kg object, giving it an acceleration of 4.5 m/s2. What is the magnitude of the net force?
- Two masses, 12 kg and 8 kg, are connected by a light inextensible string over a frictionless, massless pulley (an Atwood machine). What is…
- A 16 kg block slides down a 40° incline with a coefficient of kinetic friction of 0.26. What is the block's acceleration down the incline?…
- A net force acts on a 18 kg object, giving it an acceleration of 4 m/s2. What is the magnitude of the net force?
- Two masses, 11 kg and 7 kg, are connected by a light inextensible string over a frictionless, massless pulley (an Atwood machine). What is…
- A 14 kg block slides down a 35° incline with a coefficient of kinetic friction of 0.22. What is the block's acceleration down the incline?…
- A net force acts on a 16 kg object, giving it an acceleration of 3.5 m/s2. What is the magnitude of the net force?