Please help me with these questions. Exam soon. Help is very much appreciated. Answers are in brackets.
13. A block is launched up the frictionless incline of 40 degrees in the diagram below with an initial speed of 5.5 m/s. What is the maximum displacement of the block up the incline? (2.4m)
18. The mass is accelerating to the right due to the two forces acting on it
force (1) = 100 N 30degrees south of east
force (2) = F(unknown) 40 degrees north of west
What is the size of the force F? (32N)
19. The system of masses is accelerating to the right at 2.0 m/s^2. If the tension in the rope at point P is 70 N, what is the coefficient of friction between the masses and the surface?
mass(1) = 20kg
mass (2) = 10kg
tension between mass 1 and mass 2
an unknown external force applied to pull it
(0.15)
20. a 6.0 kg penguin in a zoo exhibit starts from rest and slides 5.0 m along a very slippery rock slope (ignore friction) into the water in 1.4s. What angle does the rock slope make with the horizontal?
(31degrees)
Thanks a lot !
for number 19:
|20kgbox|----P----|10kgbox|---->
13. A block is launched up the frictionless incline of 40 degrees in the diagram below with an initial speed of 5.5 m/s. What is the maximum displacement of the block up the incline? (2.4m)
18. The mass is accelerating to the right due to the two forces acting on it
force (1) = 100 N 30degrees south of east
force (2) = F(unknown) 40 degrees north of west
What is the size of the force F? (32N)
19. The system of masses is accelerating to the right at 2.0 m/s^2. If the tension in the rope at point P is 70 N, what is the coefficient of friction between the masses and the surface?
mass(1) = 20kg
mass (2) = 10kg
tension between mass 1 and mass 2
an unknown external force applied to pull it
(0.15)
20. a 6.0 kg penguin in a zoo exhibit starts from rest and slides 5.0 m along a very slippery rock slope (ignore friction) into the water in 1.4s. What angle does the rock slope make with the horizontal?
(31degrees)
Thanks a lot !
for number 19:
|20kgbox|----P----|10kgbox|---->