Engineering Board Exam Reviewer · Engineering Mechanics · hard
A 10 kg block slides down a 25° incline with a coefficient of kinetic friction of 0.14. What is the block's acceleration down the incline? (g = 9.81 m/s2)
- 2.9
- 4.15
- 5.39
- 1.37
Answer
A. 2.9
Solution
a = g( - ) = 9.81( 25° - 0.14 25°) = 2.9 m/s2.
More Engineering Mechanics questions
- A net force acts on a 12 kg object, giving it an acceleration of 2.5 m/s2. What is the magnitude of the net force?
- Two masses, 8 kg and 4 kg, are connected by a light inextensible string over a frictionless, massless pulley (an Atwood machine). What is…
- A 8 kg block slides down a 20° incline with a coefficient of kinetic friction of 0.1. What is the block's acceleration down the incline?…
- A net force acts on a 10 kg object, giving it an acceleration of 2 m/s2. What is the magnitude of the net force?
- A projectile is launched with an initial speed of 28 m/s at an angle of 45° above the horizontal. Neglecting air resistance, what is its…
- An object is dropped from rest from a height of 32 m. Neglecting air resistance, how long does it take to hit the ground? (g = 9.81 m/s2)
- A particle starts with an initial velocity of 8 m/s and a constant acceleration of 3.5 m/s2. What distance does it travel in 8 seconds?
- A car starts with an initial velocity of 9 m/s and accelerates uniformly at 6 m/s2 for 7 seconds. What is its final velocity?
- A projectile is launched with an initial speed of 26 m/s at an angle of 40° above the horizontal. Neglecting air resistance, what is its…
- An object is dropped from rest from a height of 29 m. Neglecting air resistance, how long does it take to hit the ground? (g = 9.81 m/s2)