+91-87964 74404
FlagBACK
Question icon
Grade 12General Physics

consider the inclined plane with an angle of 67 degree. The spring constant has a value of 1850 N/m. A 10kg block is pushed against the spring compressing it to 40 cm. The block is then released and the spring expands pushing the block up the plane. the coefficient of kinetic friction between the block and the plane is 0.5. what is the normal force and frictional force acting on the system? how far up the plane will the block slide before coming to stop? what is the change in KE?

Profile image of sam
8 Years agoGrade 12
Answers icon

1 Answer

Profile image of Sanju
8 Years ago
  1. Normal force = mg cos 67 = 10*9.81*cos67 = 38.33N
  2. Frictional force = coeff. of kinetic friction * normal force = 0.5*38.33 = 19.165N
  3. initial (KE+Gravitational PE+ Spring KE)-W = final (KE+Gravitational PE+ Spring KE)......this eqn gets deduced to this form: [spring PE – W = Grav. PE]......i.e, [(0.5 k(x)^2) – (Fd) = mgh]....Therefore d = [(0.5 k(x)^2) / (F+mg sin 67)]...Plugging the values give d = 1.35 m...So it will move 1.35 m up the plane...
  4. Change in KE is zero as initial and final velocities are zero.

Other Related Questions on general physics

question mark

 In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics
1 Answer Available

Last Activity: 9 Months ago

question mark
moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass
general physics
2 Answers Available

Last Activity: 3 Years ago

question mark
A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?
general physics
1 Answer Available

Last Activity: 3 Years ago