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The tree needs to fall uphill even though it is leaning downhill. The felling notch at O is sufficiently large so that the resisting moment at O is negligible. The trunk above point O weighs P35 kN. With the aid of the winch W the cable prevents the tree from falling downhill. Determine the tension in the cable AB. Other dimensions in metres are P36, P37 & P38.
The tension in the cable AB in kN to2 decimal places is,
A woman walks 250m in the direction 35 degrees east of north, then 170m directly east. (a) using graphical method, find her final displacement from the starting point. (b) compare
Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t
Illustrates the principle of transmission electron microscope? Principle of Transmission Electron Microscope The electron microscopes are worked onto the basis of, while a b
Give at least two differences between optical diffraction and optical interference phenomena.
A right triangular prism has volume equal to 288 cm^3. The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine th
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
a sphere is at rest on a wall at a angle of 3,4(slpoe) to the left. it also rest against a vertical wall. we are to find the magnitude of the resultant force at the vertical wall.
mass=volume * density.By using this formula we can find the mass of sphere. Volume of sphere=(4/3)pi*r^3 V=(4/3)*3.14*(1*10^-2)^3=4.187*10^-6 Mass=(4.187*10^-6)*900=3768*10^-6kg
find time period and frequency of vibration of water level in a limb of manometer executing simple harmonic vibrations
A boat can travel at a speed of 3 m s -1 on still water. A boatman needs to cross a river whilst covering the shortest possible distance. In what direction should he row with resp
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